B01D 2101/04
Sand or gravel filters
B01D2101/04 (Sand or gravel filters) appears on 59 US grants and 92 published applications in this corpus.
Search patents in B01D- Granted patents
- 59
- Published applications
- 92
- Assignees
- 55
- Inventors
- 162
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 4 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 7 | 5 |
| 2015 | 1 | 4 |
| 2016 | 2 | 3 |
| 2017 | 3 | 4 |
| 2018 | 4 | 10 |
| 2019 | 10 | 8 |
| 2020 | 4 | 8 |
| 2021 | 3 | 5 |
| 2022 | 5 | 11 |
| 2023 | 5 | 7 |
| 2024 | 7 | 8 |
| 2025 | 4 | 7 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for stormwater management6 Oct 2026US 12,753,093 B2Advanced Drainage Systems, Inc.
- Systems and methods for production of potable water by recycling processed wastewater streams17 Feb 2026US 12,552,686 B1Mulberry River Environmental LLC
- Devices and methods for moving, removing and/or installing one or more components of a treatment unit9 Dec 2025US 12,491,454 B2Roberts Marketing DE, Inc.
- Systems and methods for stormwater management9 Dec 2025US 12,492,130 B2Advanced Drainage Systems, Inc.
- Water filtration and aeration unit18 Mar 2025US 12,252,415 B2Wets LLC
- Adjustable weir for a collection trough, a collection trough and a collection trough assembly24 Sep 2026US 2026/0284558 A1Roberts Water Technologies, Inc.
- Systems and Methods for Stormwater Treatment6 Aug 2026US 2026/0225917 A1Geostorage Corporation
- Waste water treatment system25 Jun 2026US 2026/0175147 A1Altinay Savunma Teknolojileri Anonim Sirketi
- Systems and Methods for Production of Potable Water By Recycling Processed Wastewater Streams25 Jun 2026US 2026/0176164 A1Mulberry River Technologies, LLC
- Permeable infiltration field forms and methods of use14 May 2026US 2026/0131262 A1Geomatrix, LLC
Most cited
By later US patents
- Modular sand filtration-anchor system and wave energy water desalination system and methods of using potable water produced by wave energy desalination15US 10,029,927 B2Murtech, Inc. · 2018
- Method of installing an air scour system into a filter bed12US 8,889,015 B2Roberts Marketing DE, Inc. · 2014
- Modular sand filtration-anchor system and wave energy water desalinization system incorporating the same10US 8,784,653 B2Murtech, Inc. · 2014
- Modular sand filtration—anchor system and wave energy water desalination system incorporating the same8US 8,778,176 B2Murtech, Inc. · 2014
- In situ treatment system and method for dewatering and stabilization of waste material deposits in waste impoundments7US 9,556,579 B2BlackRock Engineers, Inc. · 2017